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Across
- 1. A chemical change when substances interact
- 3. An educated guess about what will happen in an experiment
- 8. Any water that falls from clouds such as rain, snow, or hail
- 9. The smallest piece of matter that makes up everything
- 10. How tightly packed the matter is in something
Down
- 2. The slow process of living things changing over many years
- 4. A tool that makes far-away things look closer
- 5. A unit of information that passes traits from parents to children
- 6. A state of matter that spreads to fill any space
- 7. A form of energy that allows us to see